附录MATLAB图像处理工具箱函数
表1 通用函数
函数功能语法
colorbar 显示颜色条colorbar
colorbar(...,'peer',axes_handle) colorbar(axes_handle) colorbar('location')
colorbar(...,'PropertyName',pro pertyvalue)
cbar_axes = colorbar(...)
getimage 从坐标轴取得图
像数据
A = getimage(h)
[x,y,A] = getimage(h)
[...,A,flag] = getimage(h)
[...] = getimage
image 创建并显示图像
对象
image(C)
image(x,y,C)
image(...,'PropertyName',Prope
rtyValue,...)
image('PropertyName',Propert
yValue,...) Formal syntax -
PN/PV only
handle = image(...)
imagesc 按图像显示数据
矩阵
imagesc(C)
imagesc(x,y,C)
imagesc(...,clims)
h = imagesc(...)
imshow 显示图像imshow(I,n)
imshow(I,[low high]) imshow(BW)
imshow(X,map)
imshow(RGB)
imshow(…,display_option) imshow(x,y,A,…) imshow filename
h = imshow(…)
imview 利用图像浏览器
显示图像
imview(I)
imview(RGB)
imview(X,map)
imview(I,range)
imview(filename)
imview(...,'InitialMagnification
',initial_mag)
h = imview(...)
imview close all
montage 在矩形框中同时
显示多帧图像
montage(I)
montage(BW)
montage(X,map)
montage(RGB)
h = montage(...)
immovie 创建多帧索引色
图像的电影动画
mov = immovie(X,map)
mov = immovie(RGB)
subimage 在一个图形中显
示多个图像，结合
函数subplot使用
subimage(X,map)
subimage(I)
subimage(BW)
subimage(RGB)
subimage(x,y,...)
h = subimage(...)
truesize 调整图像显示尺
寸
truesize(fig,[mrows mcols])
truesize(fig)
wrap 将图像显示到纹
理映射表面
warp(X,map)
warp(I,n)
warp(BW)
warp(RGB) warp(z,...) warp(x,y,z,...)
h = warp(...)
zoom 缩放图像或图形zoom on
zoom off
zoom out
zoom reset zoom
zoom xon
zoom yon
zoom(factor) zoom(fig, option)
表2 图像文件I/O函数
函数功能语法
imfinfo 返回图像文件信息info = imfinfo(filename,fmt) info = imfinfo(filename)
imread 从图像文件中读取图像A = imread(filename,fmt)
[X,map] = imread(filename,fmt)
[...] = imread(filename)
[...] = imread(URL,...)
[...] = imread(...,idx)
(CUR, GIF, ICO, and TIFF only)
[...] = imread(..., 'PixelRegion', { ROWS, COLS }) (TIFF only)
[...] = imread(...,'frames',idx) (GIF only) [...] = imread(...,ref) (HDF only) [...] = imread(...,'BackgroundColor',BG) (PNG only)
[A,map,alpha] = imread(...)
(ICO, CUR, and PNG only)
imwrite 把图像写入图像文件中imwrite(A,filename,fmt)
imwrite(X,map,filename,fmt)
imwrite(...,filename)
imwrite(...,Param1,Val1,Param2,Val2...)
